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No power sharp 21v-w70m

Light power on and then off..

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Short circuited component at its main board. Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Give a special attention to its horizontal output transistor. Replace it, and check. Check this device for collector to base, or collector to emitter leak. Even a slightest leak, will cause sivere problem.

Posted on Apr 16, 2014

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jingjao
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SOURCE: 21V-W70M

check the regulator maybe its busted

Posted on Mar 04, 2010

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Ask for a resistor value of r704 on sharp model 21v-fk200m


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1 Answer

My sharp tv model 21V-W70M has no sound, the speaker is ok but no soumd coming out.


Check whether the audio is muted by accidental press at remote control button. Enter its sound menu, and check it. If muted, as you know there will be no audio output. If not muted, check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/
Check the voltage goes to audio amp circuit section.
Check speaker/s [If there is two speakers, both of it should be checked for coil continuity]
Check whether the audio is muted.
If all these are OK, check and replace the audio output IC.

Oct 02, 2015 | Sharp Televison & Video

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Sir do u have an example of sistimatic diagram of sharp primo 21V-W70M ?


http://elektrotanya.com/sharp_20lk31_20lk61_chassis_sn-70a.pdf/download.html

Nov 26, 2014 | Sharp Televison & Video

1 Answer

What problem of sharp crt 21v-w70m dropping voltage in b+ to 80v when i turn on


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Do a search by type in the brand name of your device at its search box.

Jul 24, 2014 | Sharp Televison & Video

1 Answer

Sir pano ma repair ang tv shark na 21v-w70m pag saksak q mg on yung light nya tapos mamaya mamatay?


If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Apr 16, 2014 | Televison & Video

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Sharp primo 21V-W70M service manual


Service manuals are in PDF and cannot be included here by this window. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience.
http://electronicshelponline.blogspot.com/ Pull up older posts.

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SHARP TV 21V-W70M CHILDLOCK RESET


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21V-W70M primo sharp black out


check the regulator maybe its busted

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